Diodes Incorporated AZ23C9V1-7

Overview

AZ23C9V1-7 from Diodes Incorporated is a dual common-anode 300 mW surface-mount Zener diode with nominal Zener voltage 9.1 V (8.5–9.6 V range), 10 Ω maximum Zener impedance at 5 mA, +0.065 %/°C temperature coefficient, and 7.0 V minimum reverse voltage at 0.1 µA leakage. It serves as precision voltage reference and overvoltage clamp in low-power analog signal conditioning circuits.

For engineers reviewing the AZ23C9V1-7 datasheet, AZ23C9V1-7 pinout, AZ23C9V1-7 application, or AZ23C9V1-7 equivalent, this page delivers verified electrical specs, SOT23 package layout, dual-Zener functional context, thermal derating behavior, and direct alternatives for voltage regulation and protection design.

Technical Context

This device integrates two matched Zener diodes sharing a common anode terminal in a single SOT23 package, enabling compact dual-rail clamping or complementary reference generation. Its ±5% matching between diodes ensures consistent breakdown behavior across both elements under identical bias conditions.

The 300 mW power rating is defined at 25°C ambient with FR-4 PCB mounting per JEDEC J-STD-020 Level 1 moisture sensitivity, and thermal resistance junction-to-ambient is 417 °C/W. Derating begins linearly above 25°C, reaching zero dissipation at 150°C.

Key Specifications

Pinout & Package

Package: SOT23 - surface-mount plastic package with matte tin-plated alloy 42 leadframe, UL 94V-0 rated molding compound, and 0.008 g typical weight.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-Zener voltage reference applications.

Compared with BZX79-C9V1 and DZ23C9V1-7, AZ23C9V1-7 uniquely delivers matched dual-Zener performance in a compact SOT23 footprint with common-anode routing - essential for space-constrained, low-component-count voltage reference and bidirectional protection designs.

Availability

AZ23C9V1-7 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, USB port overvoltage protection, and automotive body control module designs requiring stable component supply, AEC-Q101 compliance, and RoHS 3–conformant sourcing.

Supply support for AZ23C9V1-7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global manufacturer of discrete semiconductors and integrated circuits, specializing in high-reliability components for industrial, automotive, and consumer applications.

AZ23C9V1-7 belongs to the AZ23C series of dual common-anode Zener diodes, engineered specifically for compact, matched-voltage reference and transient suppression in automated SMT production environments.

FAQ

What is the maximum continuous Zener current for AZ23C9V1-7 at 75°C ambient?

At 75°C ambient, the power derating curve reduces maximum dissipation to 150 mW. With nominal V_Z = 9.1 V, the maximum continuous Zener current is 150 mW ÷ 9.1 V ≈ 16.5 mA. This assumes proper PCB copper area per Diodes' recommended pad layout (2.0 mm × 0.9 mm pads).

Can AZ23C9V1-7 be used for bidirectional ESD protection on differential signals?

Yes - its common-anode configuration allows both cathodes to clamp independently to ground. When placed across differential lines (e.g., D+/D−), it limits common-mode surges to ≤9.1 V and differential transients via cross-clamping action, validated per IEC 61000-4-2 Contact Discharge (8 kV).

Is there a halogen-free version of AZ23C9V1-7, and how is it marked?

Yes - AZ23C9V1-7 is inherently halogen- and antimony-free per Diodes' "Green" definition (<900 ppm Br+Cl, <1000 ppm Sb). No special marking is required; all units shipped since Rev. 18 comply, and the "-7-F" suffix confirms full RoHS 3 and JEDEC qualification.

How does the 5% ΔV_Z matching affect use in precision voltage divider networks?

The ≤5% matching ensures both Zeners track within 0.46 V across temperature and current - sufficient for 12-bit ADC reference buffering where absolute accuracy is set by external resistors, but not for sub-0.1% ratiometric applications requiring laser-trimmed matching.